Our story begins... in a novel, comic or game that the Protagonist consumed prior to there transgression. Our dear Protagonist thinks that there are laws to being a Main Character, mob, supporting character, second male lead, villain...  ... more>>

There is a quality meta, 4th-wall shenanigans to be had. These are curated titles that are dependent on whether or not our dear protagonists, "they follow self-imposed rules"

(comics) The Stereotypical Life of a Reincarnated Lady, Zettai BL ni Naru Sekai vs. Zettai BL ni Naritakunai Otoko,  Ore ga Otome ge de Kyuuseishu, Inso Law, Heart Throbbing Conquer, I Think I Have Transmigrated Somewhere

(honorable mentions) Beware the Villainess, I'm No Heroine, Resetting Lady <<less

system-san is either here to make the MC suffer or to make his life better

No description.

Too sad to read without tearing

An assortment of stories built around really offbeat ideas. ... more>>

Are they good? Who can say? Normal standards do not apply if one of your main characters is a sandwich.  <<less